Feed-water heater



(No Model.) v

R. W. PELTON.

FEED WATER HEATER. No. 270,692 v Patented Jan. 16,1883.

bfifii wm Attorney V UNITED STATES PATENT OFEICE RICHARD W. PELTON, OFTOWNSEND, SANDUSKY COUNTY, ASSIGNOR OF ONE-HALF TO M. F. OOWDERY AND O.P. OOWDERY, OF SANDUSKY, OHIO.

SPECIFICATION forming part of Letters Patent No. 270,692, dated January16, 1883.

I Application filed May 19, 1882. (No model.)

To all whom it may concern:

Be it'known that I, RICHARD W. PELTON, of Townsend, county of Sandusky,State of Ohio, have invented a new and useful Improvement in FeedaterHeaters for Steam-Boilers; and I declare the following to be a full,clear, and exact description of the same, such as will enable othersskilled in the art to which itpertains to make and use it, referencebeing had to the accompanying drawings, which form a part of thisspecification.

My invention consists in the combinations of devices and applianceshereinafter specified, and more particularly pointed outin the claims.

:5 In the drawings, Figure 1 is a longitudinal central section of adevice embodying my invention. Fig. 2 is a vertical cross-section of thesame.

Heretofore great difficulty has been expe- 2o rienced in the use ofsteam-boilers from the presence of various impuritiessuch as mud, lime,&c.-in the water used, whereby acoating or depositis formed in theboiler, causing much trouble and expense in the removal of 2 the same,and constituting the most fruitful source of boiler explosions by reasonof the burning out of the coated surfaces, and also causing a greatwaste of fuel. It is the object of my invention to correct thisdifficulty.

0 It is well known that water when heated tends to precipitate its manyimpurities. My invention provides means for accomplishing this resultand. for furnishing to the boiler water-in a heated and purifiedcondition.

Heretofore it has been customary generally to heat the feed-water frombelow or from a heating-surface in the body of the water. In thesecases, however, ebullition so agitates 'the water that the impuritieswhich are sepa- 0 rated are not permitted to settle or precipitate, butare fed onward with the water into the boiler. By my invention, however,the water is heated from the top, so that this agitation is prevented,and impurities are there- 4 5 fore permitted to settle quietly as soonas separated. My construction is such as to facilitate this settling,also to facilitate the removal of deposits from the heater, and theintroduction of water to the heater in the most practicable 5o manner toeffect the separation of its impurities by the heat.

To this end, as shown in the drawings, A is a boiler of any ordinaryconstruction.

13 is its wall or case.

B is the foundation. 5

O is the furnace.

D is the grate. r

E is a feed-water reservoir, located under the boiler and within thefurnace in such a manner that the water shall be heated on the top orupper portion. I prefer that the lower portion of this feed-waterreservoir should be excluded from the direct heat of the furnace byembedding the said lower portion either in common earth masonry or somenon-conducting material, so as to secure as low a temperature aspossible in the bOilliOllhOf the reservoir, and thus facilitate theclarifying of the water by preventing ebullition.

e is a removable tube or mud-pipe in the feed-Water reservoir. I preferthat this tube should be nearly as long as the reservoir. On the outsideend it is provided with a faucet, e, for the purpose of drawing off anysediment that may accumulate in the bottom of the reservoir. This pipemay be drawn out, so as to draw away the sediment from any point alongits line.

a is the supply-pipe by which water is admitted to the reservoir. Iprefer that said tube should be suitably perforated, so as to emit thewater into the reservoir in the form of jets from the numerousperforations along its whole length.

(2 is the feed-tube leading from the reservoir into the boiler. A curvedtube is found very convenient in connecting the reservoir with oldboilers; but I do not limit myself to the curved form of the tube, as astraight one comes also within the scope of my invention. go In'practiceit is found preferable that this tube should extend a-little below thesurface of the water in the reservoir.

I am aware that feed-water. heaters have been located on a bridge-wallunderneath the 5 boiler, adapted for a steam generator and circulatorfor steam-boilers, where the construction is evidently not designed,however, to purify the water, as above described, but to expose as muchof the surface of the reservoir as possible to the heat to generatesteam and to introduce it back into the boiler; and for boiler into andthrough the reservoir, but is heating-reservoir.

this purpose the device is provided with means -I for supplying thereservoir with water from the boiler, the water being first pumped intothe boiler. In said device, "also, means are provided for returning thesteam to the boiler. I do not claim such a construction, asitis the essential feature of myinvention not to locate the reservoir across thetop of the bridge-wall, as in the device referred to, where the bridgewall terminates nearly on a level with the grate-bars, beingsurmounted by the reservoir, but to suitably exclude the lower portionof the reservoir from the heat by embedding said portion in somenon-conducting material, so as to prevent the heating of the water inthe bottom of the reservoir as much as possible, for the purpose offacilitating the deposit of any impurities in the water.

My construction is purposely designed to prevent circulation from thebottom of the speciallyfor the purpose of supplying the boiler withwater heated at the upper surface in the It will also be observed thatthe feed-water heater is itself the mud-pipe of the boiler, being solocated as to gather the sediment that may pass into the latter.

What I claim is- 1. A feed-water heater for supplying purified water tosteam-boilers, consisting of a reservoir located within the furnace insuch a manner that the lower portion shall be excluded from the directfurnace heat, and adapted to receive the furnace heat only upon itsupper portion, and in combination therewith a pipe adapted to feed waterfrom the upper surface of said reservoirto the boiler and a pipe adaptedto supply water to said reservoir, substantially as described.

2. A feed-water heater for supplying purified water to steam-boilers,consisting of a reserioir located within the furnace in such a fiedwater to steam-boilers, consisting of a reservoir located within thefurnace in such a manner that the lower portion shall be excluded fromthe direct furnace heat, and adapted to receive the furnacejheatonlyupon its upper portion, and in combination therewith a r pipe adapted tofeed water from the upper surface of said reservoir to the boiler, apipe adapted to supply water to said reservoir, and an interioradjustable tube, 6, located in the bottom of said reservoir and providedwith a faucet at its outer end, substantially as and for the purposesdescribed. 7

4. The combination, with a steam-boiler, of a feed-water heater forsupplying the boiler with purified water, said heater consistiugof areservoir located within the furnace in such a manner that the lowerportion shall. be excluded from the direct furnace heat, and adapted toreceive the furnace heat only upon its upper portion, and in combinationtherewith a pipe adapted to feed water from the upper 7 surface of saidreservoir to the boiler, and a pipe adapted to supply water to the topof said reservoir, and meansfor cleansing the reservoir of sediment,substantially as described.

In testimony whereof I sign this specification in the presence of twowitnesses.

RICHARD W. PELTON.

Witnesses:

ARTHUR PHINNEY, M. F. (JowDERY.

